Pressure-regulator.



PATENTED SEPT. 6, 1904.

2 SHEETS-SHEET 1.

N0 MODEL.

PATENTED SEPT. 6, 1904.

A. KLEINPELDT. PRESSURE REGULATOR.

APPLIOATION FILED MAR.18, 1904.

2 SHEETS-SHEET 2' N0 MODEL.

UNITED STATES Patented September 6, 1904.

PATENT OFFICE.

ARTHUR KLEINFELDT, OF HOBOKEN, NEW" JERSEY, ASSIGNOR TO SOPHIE KLEINFELDT, OF HOBOKEN, NE\V JERSEY.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 769,482, dated September 6, 1904.

Application filed March 18, 1904.

To (NZ whom it Huey concern.-

Be it known that I. ARTILUR KLEINFELDT, a citizen of the United States, residing at No. 1208 Villow avenue, Hoboken, New Jersey, have invented certain new and useful Improvements in Pressure-Regulators, of which the following is a specification, reference being bad to the accompanying drawings, forming a part hereof.

This invention relates to the construction of pressure regulating and indicating devices of the general character shown and described in Letters Patent of the United States No. 638,251, dated December 5, 1899, and such as are commonly employed in the handling of liquefied carbonic-acid gas. One of the stated objects of the invention shown and described in said Letters Patent was to produce a device in which the pressure indicator or gage and the pressure-regulating valve should be both operated from a single diaphragm. The connections between the valve and diaphragm and the indicator and diaphragm in the device shown and described in said Letters Patent are not such as to render the operation of the valve and indicator independent of each other; and one object of this invention is to secure independence of action between the valve and indicator in order to obtain a more accurate and sensitive reading of the indicator.

Another object of the invention is to provide suitable actuating mechanism for the indicator, whereby it may be adjusted from time to time to take up wear or to read more or less for given pressures.

In connection with the indicator means are provided to prevent the indicator-arm from being injured or shifted upon its spindle when suddenly, as through a break in the apparatus, the pressure drops and the indicator-arm is forcibly brought back to the zero of the scale.

Another object of the invention is to prevent the diaphragm from sweating, which is caused by the intense cold produced by the rapid expansion of the incoming gas.

In the present case the diaphragm is arranged to be acted upon by idle gas, so that it shall not be exposed to the low temperatures of the expanding gas. Improved means are Serial No. 198,756. LNo model.)

also provided for limiting the movement of the valve-adjusting handle in order that said handle may be readily set for the particular pressure desired.

The improvements are illustrated in the accompanying drawings, in which Figure l is a plan view of the apparatus, showing particularly the indicator and outletvalve. Fig. 2 is a view in central section, taken on the plane indicated by the line 2 in Fig. 1. Fig. 3 is an elevation of the outlet end of the indicator with the cap shown at the left in Fig. 2 in the outlet-pipe to retain the spherical valve. Fig. is a detail view taken upon a plane indicated by the line 4 t of Fig. 2 of the end of the bearing-piece for the valve-adjusting spindle, showing the valve-setting device, the handle upon the spindle being indicated in dotted lines. Fig. 5 is a detail view showing a modilied form of the regulating-valve. The main body A, to which the other parts are secured, is recessed to form a chamber a and channels a and a", connected therewith, said chamber and channels forming a continuous conduit through which the gas is conducted from the source of supply introduced through pipe B to the outlet-valve c in the connection-piece (l. The gas in this conduit exerts a pressure upon the diaphragm D, which is located or arranged out of and above the conduit, being clamped between the body A and cap E, containing the indicating mechanism, by screws 0 and forming a shallow chamber a with the body I Screwed to the body by a clamping-nut f is a connection-piece E, into which the supply-pipe B is litted. This connection-piece is recessed to form the chamber f, communicating with the chamber a through the channel a, said chamber f containing the head or plug of the regulating-valve (nr. This regulating-valve, the head of which may be cupshaped, as shown in Fig. 2, or wedged-shaped, as shown in Fig. 5, and which is preferably provided with a suitable number of projections g to center and guide it, has an elongated stem extending through the channel a" into the chamber a, and upon the end of this stem there is threaded a nut This nut is held from rotation by keys 9 which work in corresponding slots in the body A, and small apertures g* are provided in the nut, through which communication is established between the chambers to and (0 In order to hold the nut at all times freely againt the diaphragm D, a coiled spring g is provided,which spring, while being of insufficient tension to cause of itself any movement or displacement of the diaphragm, is nevertheless capable of causing the nut g and consequently the regulatingvalve G, to follow the movements of the diaphragm.

For the purpose of effecting the adjustment of the valve without requiring the casing of the regulator to be opened the face of the valve head or plug is formed with a squared or other angular opening g to be engaged by a similarly-shaped pin or shank it, formed upon the end of the spindle H, which is mounted to rotate gas-tight in a suitable bearing in the wall of the connection-piece F in line with valve and valve-stem. A flange it may be formed on the spindle and be held snugly against its seat on the wall of the connection-piece by a jam-nut k upon the end of the spindle, said nut being adapted to be screwed down upon the hand-wheel 7L and a fastening-screw it" being provided to hold the jam-nut in its turned position. A suitable packing if may be provided between the flange h and the connection-piece F. The length of the pin or shank h and of the hole g is such that the necessary longitudinal movement of the valve with respect .to the shank or pin is possible without disengagement of the valve from the spindle. It is obvious that the shank or pin might equally well be formed on the flange to engage a corresponding hole in the spindle. In order to readily set the hand-wheel k for the particular pressure desired, a washer h, having a projection k may be provided around the spindle between the hand-wheel h and the end of the connection-piece F to be engaged by pins or projections if and it, one being provided upon the wheel 7L and the other being adapted to be inserted into any one of several pin-holes h, formed around the spindle in the end of the connection-piece F. In setting the instrument for a particular pressure the pin it is placed in the proper hole in the connection-piece and the washer is turned until its projection bears against this pin. It will be obvious from Fig. 4 that the projection upon the Washer will thus limit the turning of the hand-wheel, and consequently the adjustment of the valve G.

The indicator mechanism, located above the regulator-diaphragm within the cap E, has a sector pivoted at 2" within the cap and geared to the indicator-arm A finger 2' one end of which is pivoted to a bracket 6*, which is capable of horizontal adjustment within the cap, has a projection upon its free end, which rests freely between the diaphragm and one edge of the sector, along which it moves as the diaphragm is affected. by the changes in pressure. It will be obvious that by changing the position of the bracket 71* the finger can be moved toward or away from the sector, and this will increase or decrease the amount of movement imparted to the sector upon the fluctuations of the diaphragm.

In order to prevent the indicator-arm from becoming bent or shifted upon its spindle in the event of its being brought forcibly back to the Zero of the scale, as might happen from a sudden discharge of gas from the conduit, a yielding stop i is provided at the Zero of the scale upon the dial 2' and may consistof a spring, as shown, one end of which extends through an elongated slot in the dial and forms a yielding stop for the indicator-arm. In the present case the spring is formed of a straight resilient piece of wire,whioh has a turn around a pin i one end of the spring being fixed. Any other suitable means may be employed to provide a yielding stop, the particular means shown herein being a simple and efficient one.

The outlet-valve c in the connection-piece C may be of any suitable construction, and in the present case is threaded to connectionpiece 0, so that by being rotated in one direction it is screwed down upon its seat 0 and when rotated in the other direction it is lifted to allow the passage of gas from the apparatus through the port 0 For rotating this valve a squared recess may be formed therein to be engaged by a similarly-shaped projection upon the spindle of the hand-wheel 0 this construction being similar in all respects to that already described of the setting-valve G. The liberated gas in passing out'of the apparatus flows through a check-valve, Which may comprise a spherical valve-plug 0*, retained in a recess 0 in the connection-piece G by means of a perforated cap 0. The connection-piece C also contains a safety-valve and blow -off cock, which may be of any approved construction. It is here shown as comprising a plungervalve 0 normally held to its seat over the port 0 by a spring 0 and having a handle 0 When the valve is operated, the gas issues into the chamber 0 and escapes through openings 0 provided in the walls of said chamber.

When the apparatus is used, for instance, to charge or carbonate a liquid, the vessel containing the liquid will be connected with the outlet-passage c of the apparatus and the hand-wheel 7& will be set in the manner above described for the particular pressure to which the liquid to be charged is to be subjected.

The turning of the hand-wheel k to unscrewthe valve-stem g from the nut 9 will increase the distance between the valve-plug of the valve Gr and the nut g withdrawing the valveplug from its seat. When the hand-wheel is set for zero-pressure, the diaphragm is in its normal position and the spring 7 holds the valve G to its seat and closes the channel a. \Vhen, however, the hand-wheel is turned from its Zero position, the valve G in the lirst instance opens up the channel a proportionately to the movement of the hand-wheel. As the gas passes into the chamber a from the source of supply it will immediately cause the diaphragm to rise and indicate through the indicating mechanism the pressure in chamber a. As the diaphragm rises the nut will be caused by the spring to follow the diaphragm, and when the pressure has been attained for which the hand-wheel [1/ was set the diaphragm will stand at the proper height to permit the partial closing of the channel a by the valve G by the action of the spring 1f the outlet-valve c has been closed, but is now opened to permit a flow of gas, a reduction of pressure in the chamber (1 takes place and is immediately accompanied by a falling of the diaphragm and a further opening of the channel a by the valve (l, thus allowing more gas to flow into the apparatus from the supply-pipeB. It will be clear that the pressure will never rise in the apparatus beyond the point for which it is set and that whenever the pressure in the apparatus falls below this point the valve G will open further to allow more gas to flow in.

it will be understood that the invention is not limited to the precise construction or arrangement of parts shown and described herein.

1 claim as my inventionl. Ina combined pressure regulator and indicator, the combination with a gas-chamber and a diaphragm subject to the pressure of gas therein, of indicating mechanism bearing freely against one side of the diaphragm, and valve mechanism to control the admission of gas to said chamber bearing freely against the other side of the diaphragm, whereby the pressure of gas in said chamber actuates both the indicating mechanism and the valve mechanism.

.In a combined pressure regulator and indicator, the combination with a gas-chamber and a diaphragm subject to the pressure of gas therein of indicating mechanism bearing freely against one side of the diaphragm, valve mechanism to control the admission of gas to said chamber bearing freely against the other side of the diaphragm, and a spring to hold the valve mechanism against the diaphragm, whereby the pressure of gas in said chamber actuates both the indicating mechan ism and the valve mechanism.

3. In a combined pressure regulator and indicator the combination with a gas-chamber and a diaphragm subject to the pressure of gas therein, of indicating mechanism bearing freely against one side of the diaphragm, a valve to control the admission of gas to said chamber and having an elongated stem, a nut threaded upon the end of the stem, and a spring to hold the nut against the diaphragm, whereby the pressure of gas in said chamber actuates both the indicating mechanism and the valve mechanism.

l. In a pressure-regulator, the combination with a valve-:uljusting spindle, a bearing therefor having pin-holes around the opening for the spindle, and a hand-wheel upon the spindle, of a washer having a projection thereon, a pin in one of the pin-holes and a projection upon the hand-wheel, said pin and projection upon the hand-wheel being adapted to engage the projection upon the washer, whereby the limit of'movement of the hand-wheel may be lived.

5. in a combined pressure regulator and indicator, the combination with a gas-chamber, and a diaphragm subject to the pressure of gas therein but located outside of said chamber, of indicatingmechanism bearing freely against one side of the diaphragm, and valve mechanism to control the admission of gas to said chamber bearing freely against the other side of the diaphragm, whereby the pressure of gas in said chamber actuates both the indicating mechanism and the valve mechanism.

6. In an indicating device for a pressureregulator, the combination of an indicatorarm, asectoroperatively connected therewith, a diaphragm subjected to the pressure to be indicated, and a linger pivoted at one end and having its other end between the diaphragm and one edge of the sector, whereby, as the diaphragm moves, the free end of the linger will travel along the edge of the sector.

7. in an-indicating device for a pressureregulator, the combination of an indicatorarm, a sector opcrativel y connected therewith, a diaphragm subjected to the pressure to be indicated, a linger pivoted at one end and having a projection at the other end, said projection lying between the diaphragm and one edge of the sector, whereby, as the diaphragm moves, the projection on the linger will travel along the edge of the sector, and means to vary the position of the finger with respect to the sector.

This specification signed and witnessed this 9th day of March, A. .l). 1904;.

ARTHUR KLEINFELDT. 1n presence of ANTHONY N. J ESBERA, M. A. BRAYLEY. 

